Display screen or portion thereof with transitional keyboard graphical user interface



FIG. 1 is a front view of a first image of a first embodiment of a display screen or portion thereof with transitional keyboard graphical user interface showing my new design;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof;

FIG. 4 is a front view of a fourth image thereof, in which the claimed subject matter shown in FIGS. 1 through 3 is completely hidden;

FIG. 5 is a front view of a first image of a second embodiment of a display screen or portion thereof with transitional keyboard graphical user interface showing my new design;

FIG. 6 is a front view of a second image thereof;

FIG. 7 is a front view of a third image thereof;

FIG. 8 is a front view of a fourth image thereof, in which the claimed subject matter shown in FIGS. 5 through 7 is completely hidden;

FIG. 9 is an enlarged view of indicated portion (marked as number 9) of FIG. 1; and,

FIG. 10 is an enlarged view of indicated portion (marked as number 10) of FIG. 2.

The outermost dot-dot-dash broken line showing of a display screen or portion thereof, as well as the broken line showing of elements of the graphical user interface, illustrate portions of the article and do not form part of the claimed design. The dot-dash broken lines of FIGS. 1 and 2 illustrate the boundaries of the portions of the design from which FIGS. 9 and 10 have been taken and enlarged. 

CLAIM The ornamental design for a display screen or portion thereof with transitional keyboard graphical user interface, as shown and described. 